Home / 28,827.61-39,763.90-19,859.56

Finding the Fourth Proportional to 28,827.61, 39,763.90 and 19,859.56

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Solution

The fourth proportional to 28,827.61, 39,763.90 and 19,859.56 is: 27,393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,827.61 : 39,763.90 = 19,859.56 : x
  2. Step 2: Convert to fraction form
    28,827.61/39,763.90 = 19,859.56/x
  3. Step 3: Cross multiply
    28,827.61x = 39,763.90 × 19,859.56
  4. Step 4: Simplify right side
    28,827.61x = 789,693,557.88
  5. Step 5: Solve for x
    x = 789,693,557.88/28,827.61
  6. Step 6: Final answer
    x = 27,393.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.